Fix sky include guards to match Chromium style

sky/engine/public/platform/WebPrivateOwnPtr.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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-#ifndef WebPrivateOwnPtr_h
-#define WebPrivateOwnPtr_h
+#ifndef SKY_ENGINE_PUBLIC_PLATFORM_WEBPRIVATEOWNPTR_H_
+#define SKY_ENGINE_PUBLIC_PLATFORM_WEBPRIVATEOWNPTR_H_
 
 #include "sky/engine/public/platform/WebCommon.h"
 #include "sky/engine/public/platform/WebNonCopyable.h"
 
 #if INSIDE_BLINK
 #include "sky/engine/wtf/PassOwnPtr.h"
 #endif
 
 namespace blink {
 
@@ skipping 51 matching lines @@
 #if INSIDE_BLINK
 template<typename T> template<typename U> inline WebPrivateOwnPtr<T>::WebPrivateOwnPtr(const PassOwnPtr<U>& o, EnsurePtrConvertibleArgDefn(U, T))
     : m_ptr(o.leakPtr())
 {
     COMPILE_ASSERT(!WTF::IsArray<T>::value, Pointers_to_array_must_never_be_converted);
 }
 #endif
 
 } // namespace blink
 
-#endif
+#endif  // SKY_ENGINE_PUBLIC_PLATFORM_WEBPRIVATEOWNPTR_H_